Check your label. Most canned hams require refrigeration
and can be kept in the refrigerator for 6 to 9 months.
Note: cured meats, like ham, tend to become rancid
rather quickly in the freezer because of their high salt
content. If hams are stored in the freezer, they should
be used within one month. So, it isn't practical to
store canned hams in the freezer since their
refrigerator shelf life is much longer.